Not at all!
He said his slice wide serves goes slightly slower than I said.
I'm surprised his "flatDTM" goes so slow, but I'll bet he doesn't flatten it out to a pure POP, but rather retains some slice or topspin to make the ball go IN.
Gotta understand, Kiteboard is basically 6' tall and 220lbs of sheer muscle. He covers baseline like nobodie's business, and moves extremely well for a big guy.
And I've watched him hit over 30 times. His motion TWISTS on takeback, giving the spin effect.